Automatic alarm.



PATENTED FEB. 12, 1907.

P. BGURNE.

AUTOMATIC ALARM. APPIQIUATION nun 11017.11. 1905.

INVENTOH Fatima/2e gamohuyzme I I A TTOHNEYS 4 FEED @TATES ATENT @FFTCFLPHILIP BOURNE, or NEW YORK, N. Y.

AUTOMATIC ALARM.

Specification of Letters Patent.

Patented Feb. 12, 1907.

Application filed November 11, 1905. Serial No. 286.930.

To all whom it may concern.-

Be it known that I, PHILIP BOURNE, a citizen of the United States, and aresident of the city of New York, (borough of Brooklyn,) in the countyof Kings and State of New York, have invented a new and ImprovedAutomatic Alarm, of which the following is a full, clear, and exactdescription.

The purpose of the invention is to provide an alarm device especiallyapplicable to windows and which can be readily set at the right-hand orthe left-hand side of a window, the said device being adapted forattachment to the lower sash and for rack or frictional engagement withthe upper sash, whereby the upper or lower sash, under ordinaryconditions, cannot be raised or lowered without sounding an alarm.

A further purpose of the invention is to so construct the alarm devicethat it may be carried entirely out of engagement with the upper sashand be'locked out of such engagement whenever desired, at such timepermitting the free movement of either sash without sounding an alarm.

A further purpose of the invention is to construct an article of thecharacter described in a very simple, economic, and durable manner andso that it may be applied to window-sashes by a person of butcomparatively little experience.

Another purpose of the invention is to so construct the rack employed inconnection with the body of the device that the said rack will offer theleast possible resistance to the gear forming a part of the bodystructure and with which it may mesh.

The invention consists in the novel construction and combination of theseveral parts, as will be hereinafter fully set forth,

and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a vertical section through a window-frame and the upper andlower sash, illustrating the application of the improve ment thereto.Fig. 2 is an inner face view of the improved automatic alarm drawn upona larger scale than that shown in Fig. 1. Fig. 3 is an outer sideelevation of the improved alarm device drawn upon the same scale, asthat shown in Fig. 2. Fig. 4

is a detail sectional view through the said device, taken practically onthe line 4 4 of Fig. 3. Fig. 5 is a sectional plan view of a side stilefor an upper sash and a plan View of alarm-actuating gears connectedwith a friction-wheel in contact with the stile and working the gearswhen the sash is reciprocated, and Fig. 6 is a detail perspective viewof the improved rack employed in connection with the body portion of thedevice.

A represents a window-frame of any ap- %roved type, provided with anupper sash and a lower sash B. At either the righthand or the left-handside of the upper sash B at the inner face of the side stile adjacent tothe glass pane a vertical rack G is secured in any suitable or approvedmanner, extending from the meeting-rail practically to the upper stile,as is shown in Fig. 1. This rack C is of peculiar construction, as isillustrated in Fig. 6, inasmuch as the teeth 10, which are usually atthe front portion of the rackbar, extend around to the inner side, andthe top and bottom of said teeth 10 are beveled more or less so as toenable the device, to be hereinafter described, to be operated on saidrack with the least possible amount of friction.

The alarm device, which is shown particularly in Figs. 2 and 3, consistsof a base-plate 11, adapted to be secured in any suitable or approvedmanner to the upper face of the meeting-rail of the lower sash B, andsaid base-plate 11, is provided with an upright member 12, which member12 at its inner face, about midway between its top and bottom, isprovided with a horizontal rectangular rib 13, as is best shown in Figs.2 and 4. The said base-plate 11 adjacent to the inside face of theupright 12 is provided with a horizontal channel or recess 13, as isalso shown in Fig. 4.

A cheek-piece 15, which is in the nature of a plate, is adapted to slidein the channel 14 of the base-plate 11, as is shown best in Fig. 4, andthis cheek piece or plate 15 is provided with a longitudinal slot 16,which slot receives said rib 13 on the upright member 12 of thebase-plate 11, as is shown in Figs. 2, 3, and 4. The slot 16 extends outthrough the inner edge of the said cheek piece or plate 15, as isindicated by dotted lines in Fig. 3, so that the cheek piece or plate 15has sliding movement on the base section or plate 11 of the said alarmdevice.

A post 17 extends out from about the central portion of the cheek plateor piece 15 as ICC is shown in Fig. 3, and the free end of a spring 18is curved upwardly and has bearing against the under side of said post17, which spring 18 intermediate of its length has bearing on a secondpost 19, extending outward from the upright member 12 of the base 11, asis illustrated in Fig. 3, and the inner end of the spring 18 is securedto the upright member 12 of the base in anysuitable or approved manner,by means of a screw 20, for example, as is also shown in Fig. 3. Thetendency of the spring 18 is to force the cheek piece or plate indirection of the side stile of the upper sash whenthe alarm device is inposition on the meeting-rail of the lower sash.

The cheek piece or plate 15 may be held in an inner position or awayfrom the upper sash to a greater or a lesser extent by any suitable formof a locking device. That shown in the drawings and which is preferredconsists of a thumb-screw 21, which is made to enter the rib 13 on theupright member 12 of the base and likewise the said upright member to agreater or lesser extent, as is shown in Fig. 1, and the nut 22, whichis screwed upon the threaded portion of the thumb-screw 21, has bearingagainst the inner face of the rib 13 and the inner face of theadjustable cheek piece or plate 15.

At what may be termed the inner upper portion of the cheek piece orplate 15 a horizontal post 23 is secured, extending'inward from the saidcheek-piece, and on the outer end of this post a gong 25 is secured inany suitable or approved manner. On the said post 23, between the gong25 and the cheekpiece 15, a sleeve 24 is mounted to turn, which sleeveis provided with an attached pinion 26 and a disk 27, the disk 27 beingnearest the gon 25, as is shown in Fig. 3, and upon the inner ace ofthis disk 27 the shanks of hammers 28 are adjustably pivoted by means ofsuitable pins 28 so that as the disk 27 is revolved these hammers willengage with the gong to strike an alarm one after the other, the gongbeing usually provided with inner projections 25, against which the saidhammers are brought in contact in sounding the alarm.

A gear 29 meshes with the pinion 26, and this gear 29 together with anattached pinion 30 are adapted to turn loosely upon a horizontal post31, likewise carried inwardly from the adjustable cheek piece or plate15, the said pinion 31 being made to mesh with a gear 32, and the saidgear is mounted to revolve on a horizontal post 33, located at what maybe termed the outer end portion of the said cheek piece or plate, 15.gear 32 is adapted to mesh with the teeth 10 on the rack-bar C. Thus inoperation when it is desired to set the alarm device the setscrew 21 isloosened, and the spring 18 will thereupon force the cheek piece orplate 15 outward or in direction of the upper sash, so

The saidthat the teeth of the gear 32 will mesh with the teeth 10 of therack O, at which time the upper sash cannot be lowered or the lower sashraised without placing the alarm mechanism in action. If, however, it isdesirable to open or close the window without sounding an alarm, theadjustable cheek piece or plate 15 is drawn inward or away from theupper sash, so as to carry the gear-wheel 32 out of engagement with therack C, and the said cheek piece or plate 15 is secured in suchinwardly-adjusted position by tightening up the thumb-screw 21.

I desire it to be understood that, while I preferably employ therack-bar C and the gear 32 for meshing with the said rack-bar, ifdesired a friction-wheel 3 1' may be con nected with the gear 32, thesaid frictionwheel 34 being then adapted for engagement with a sidestile of the upper sash, so that the train of gearing in the alarmdevice will be set into action when the window is being opened or closedby the frictional engagemefit of said friction-wheel with the upper sasA suitable guide 23 is usually secured to the outer face of the cheekpiece or plate 15, which guide extends down over the vertical member 12of the base 11, as is shown in Fig. 3. It is evident that an alarmdevice constructed as above described may be used either right or left,as occasion may demand.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. In an. alarm device, a base having a verticalmember and a horizontal rib upon the said vertical member, a cheek-platehaving sliding movement on the base and having a slot to receive thesaid rib, a spring secured to the vertical member of the base and havingbearing against the cheek-plate, the said spring normally tending toforce the cheekplate in one direction, a locking device for thecheek-plate, a gong carried by the said cheek-plate, and a train ofgearing likewise carried by the cheekplate, the said train of gearingbeing in operative connection with the gong and adapted to be operatedby a contact of one its members with a moving object.

2. In an alarm device, a base-plate provided with a horizontal channelor recess, and having an upright member, a cheekplate having slidingmovement in the said channel, the upright member of the base and thesaid cheek-plate having a rib-andslot connection, a lock for thecheek-plate, a tension device normally tending to force the cheek-platein one direction, a gong carried by the cheek-plate, and a train ofgearing carried by the cheek-plate and in operative connection with thegong, the said train of gearing being adapted to be operated by contactof one of its members with a movable object.

3. In automatic alarm devices for windows, a rack-bar adapted forattachment to an upper sash, the teeth of which rack-bar extend along atthe front and at an adjacent side, the upper and the lower faces of theteeth being beveled, a body-section comprising a base adapted forattachment to the meeting-rail of the lower sash of the window-frame, acheek piece or plate having sliding movement in the said base, a lockingdevice for the cheek-piece, a spring carried by the base, normallyacting to carry the cheek-piece in direction of the said rack, a gongcarried by the cheek piece or plate, and a chain of gearing likewisecarried by the cheek piece or plate and which is in operative connectionwith the hammer members of the gong and the said rack-bar.

4. The combination with a rack-bar adapted for attachment to the sidestile of the up per sash of a window-frame, of an alarm device adaptedfor attachment to the meetingrail of the lower sash of the window-frame,the said alarm device consisting of a base having a vertical member anda horizontal rib upon the said vertical member, a cheekpiece held toslide in the base and provided with a slot to receive the said rib, aspring secured to the vertical member of the base and having bearingagainst the cheek-piece, acting to normally force the said cheek piecein direction of the rack-bar, a locking device for the said cheek-piece,a gong carried by the cheek-piece, and a train of gearing for operatingthe hammers of the said gong, which train of gearing is likewise carriedby the cheek-piece and is in operative connection with the saidrack-bar.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

PHILIP BOURNE.

Witnesses:

J. FRED AOKER, J NO. M. BITTER.

